Sash-locking mechanism.



No.-702,700. Patented lune I7, |902.

V J.A. BROOKS & E. E.. WHITTAKER. l

VsAsH LocKme mEcHANlsM.

(Application filed M'ar. 17, 1902.)

(No Model.)

ATTORNEYS,

Tru: nunms PETEus 0a. rnofoumo.. wunmoo, n. c.

UNITED 4STATES PATENT OFFICE.y

JOSEPH A. BROOKS AND EDWARD E. WHITTAKER, OF PATERSON, N'EV JERSEY.

sAsH-LOOKING MEOHANISM.

SPECIFICATION forming part of Letters Patent No. 702,700, dated J'une.17, 1902.

Appncann'ie'd March 17, 1902. sesamo. 98,514. (Nomad.)

To @ZZ whom it mag/concern:

Be it known that we, JOSEPH A.' BROOKS and EDWARD E. WHITTAKER, citizensof the United States, residing-,inPatersom in the county of PassaicandState'of New Jersey, have invented certain new and usefulImprovements in -Sash-Locking Mechanisms; and we do hereby declare thefollowing to be a full, clear, and exaetdeseription of the same.

This invention relates to locking devices for window-sashes; audit hasreference particularly to mechanism of this nature in which a toothedrackV is employed, so that the sash may be secured at any desiredposition in the window-frame.

The principal object of the invention is to provide a mechanism of thisnature whereby the upper sash may be left slightly down from the top atnight, so as to permit ventilation of the apartment, and yet be lockedagainst further opening from the outside.

A further object of the invention is to so construct the lockingmechanism that it will lock the lower sashalsowhen the said sash is inits closed position.

The invention consists in the improved sash-locking meansloonstruotedsubstantially as will be hereinafter described, and nally embodied inthel clauses of the claim.

In the accompanying drawings, Figure l shows our invention applied tothe ordinary window. Fig. 2. is a slightly-enlarged horizontal section,taken just above theupper.

sash, of what islshown in Fig. l, portions of the lower sash being shownin section to fully Fig.` 3 is a side view of the window-frame removedfromV disclose details of the invention.

the walls of the building-and showing ourinvention in positionthereinfand Figs. 4 and 5 illustrate details of the invention.

In the side rails of the upper one of two sa'shes @,arranged to movevertically,as usual,-

is pivoted at its lower end, as atj, extending vertically in the framef, while the lever 't' is p'ivoted between its ends, vas .at la, one endOverlapping the dog h, being against the outer face of the saine. Alplate-spring Z, disposed opposite the inside face of the dog h andtending to push the' samel outwardly (by bearing with its upper endagainst said dog)is held in place by being passed between two pins m,which traverse the vertical portion of the opening g of the frame f, thelower end of the spring being bent outwardly, extending between thelower end of the dog and the adjoining wall of the frame. The springtherefore acts to keep the dog disengaged from the rack, opposite towhich, it should be remarked, said dog is disposed.

In the parting-railof the lower sash a are i arranged slide-rods n, eachlof `which is adapted at its Outer end, when'the sash is lowered, tobear against the rfree end of the lever 'L' to push it outwardly. Theinnereuds of these rods have opposed heads 0,"betwe'en which is a cam p,carried by a spindle g. It should be remarked that the spindle hasbearings in a casing 1', which is set in the parting-rail of thelowersashandwhich has a cover s, secured in place by 'screws t. The rods 'nproject through the side walls of this` casing. Between the said sidewalls of the casing and the heads of the rods are interposedspiralsprings u, which are coiled. about the rods and tend to presstheir heads against the cam p.

o issimply a crank carried by the spindle for turning the cam p. l.

.Whenit is desired to lock-the upper sash open at any1 desired position,the lower sash is first arranged at its! closed position, so that theslide-rods will be 'aline'd with the ylevers z'. By means of the crank uthe cam p is then turned, causing the-.slide-rods'to inlove outwardlyand turn the'le'vers 't' on their pivots. The ends of these leversAwhich'areopposed' to the dogs are thus caused to move inwardly,

pressing the dogs against theracks c. In` this position itv will beimpossible to lower the upper sash from the outside.` If the 1evers 1lare so constructed that, as shown in the drawings, their free ends willset back considerably into thefram'e f when moved IOO by the slide-rodsn they will form, with the frame, recesses, as at fw, Fig. 2, in whichthe ends of the slide-rods may take. Thus Will be formed between theframef and the sliderods locking means for the lower sash.

Having thus fully described our invention, what we claim as new, anddesire 'ro secu re by Letters Patent, :is-

1. In a sash-locking' mechanism, the combination of theWindow-frame,sashes arranged to slide therein, a rack carried by one ofsaid sashes, a dog adapted to engage the rack and pivotally arranged insaid frame, and means for actuating said dog, a portion of said meansbeing carried by the other sash, substantially as described'.

2. In a sash-locking mechanism, the combination ofthe wi ndoW-frame,sashes arranged to slide therein, a dog pivoted in the frameand adapted to engage one of said sashes, a lever also pivoted in saidframe and engaging said dog, a sliderod arranged in one of said sashesand engaging said lever, and means for actuating said slide-rod,substantially as described.

3. In a sash-locking mechanism, the combination, with the Window-frame,of sashes arranged to slide therein, a dog pivoted in said frame andadapted to engage one of said sashes, a lever engaging said dog, asliderod arranged in the other sash and adapted to register with andactuate said lever, and means for actuating said slide-rod, saidWindow-f rame having a recess adapted to receive the end of saidslide-rod to lock the' sash carrying` said slide-rod, substantially asdescribed.

In Witness whereof we have hereunto set our hands in presence of twoWitnesses.

JOSEPH A. BROOKS. EDWARD E. VVHITTAKERA

